Words that start with R

Roe is eggs from either a fish or some other sea creature, like a crab or sea urchin. Roe is collected before it leaves the animal's body. Some types of roe are called caviar.

Rolled is the past tense of roll.

A rollercoaster is a series of tracks that go up and down, and a cart that slides on the tracks. Rollercoasters can be very fast, and sometimes even have full loops in the tracks so you go upside down. Rollercoasters are great fun to ride on.

A rolling pin is a long cylindrical tool, usually made of wood, which usually has a handle on each end to grip onto. Rolling pins are used for flattening out pastry into a smooth sheet the same thickness all over, so it can be used as a pie casing or to cut cookies from.

A roof is the topmost part of a house or building. Rooves are usually sloped and watertight so rain and snow runs off them and doesn't go inside the house.

A room is an enclosed area in a house or building with a specific purpose. A bedroom is for sleeping, a kitchen is for cooking, and a classroom is for learning.

A rooster is a male chicken.

A rope is a very thick, strong piece of string. You use rope for tying big things, like the sails on a yacht, like the rope in the picture. A fun use for rope is a tug 'o war. Rope is usually made from the fibre from coconut shells, or a modern fibre like nylon, twisted together so it is thicker.
If you need to tie something that is too big or heavy for ordinary rope, you either need rope made from strands of metal or use some steel chain.

Rose quartz is simply quartz containing impurities that gives it a delicate pink colour. It is popular for jewellery, and for carving small ornaments and trinkets from.

Rosemary is a woody evergreen herb that grows into a shrub up to about a metre and a half tall and much wider again. It can be clipped into a hedge or other topiary shapes. It has very strong smelling narrow leaves and purple flowers. It grows well in hot, dry conditions and most varieties tolerate heavy frosts. It does not like being overwatered.
Rosemary goes very well with lamb dishes, but can be used to flavor a variety of other foods too.